Bacteria which grow either in the presence or absence of oxygen___________?
Correct answer: C. Facultative bacteria
- A. Aerobic bacteria
- B. Anaerobic bacteria
- C. Facultative bacteria
- D. Microaerophilic
Explanation
Facultative bacteria can grow when oxygen is present and can also switch to anaerobic metabolism when oxygen is absent. Students may choose aerobic bacteria because the question mentions growth with oxygen, but strict aerobes cannot grow without it.
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Biotechnology applies genetic engineering, cell culture and recombinant DNA methods to medicine and public health. The material includes production of insulin, vaccines and antibiotics, diagnostic techniques, gene therapy, genetically modified organisms and the ethical concerns surrounding manipulation of human genes.
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